WO2021203247A1

WO2021203247A1 - Unlicensed frequency band feedback method, unlicensed frequency band feedback apparatus, and storage dielectric

Info

Publication number: WO2021203247A1
Application number: PCT/CN2020/083578
Authority: WO
Inventors: 董贤东
Original assignee: 北京小米移动软件有限公司
Priority date: 2020-04-07
Filing date: 2020-04-07
Publication date: 2021-10-14
Also published as: US20230155735A1; CN113767668A

Abstract

The present disclosure relates to an unlicensed frequency band feedback method, an unlicensed frequency band feedback apparatus, and a storage dielectric. The unlicensed frequency band feedback method applied to network device, and comprises: determining that a high-priority physical uplink shared channel is received; and sending downlink feedback information, the downlink feedback information being used for feeding back hybrid automatic repeat request acknowledgement information of the high-priority physical uplink shared channel. The present disclosure achieves timely feedback on the feedback information of a high-priority physical uplink shared channel.

Description

Unlicensed frequency band feedback method, unlicensed frequency band feedback device and storage medium

Technical field

The present disclosure relates to the field of communication technology, and in particular to an unlicensed frequency band feedback method, an unlicensed frequency band feedback device and a storage medium.

Background technique

In the New Radio (NR) technology, the use of a hybrid automatic repeat request (Hybrid automatic repeat request, HARQ) feedback retransmission mechanism is supported.

In the standard discussion and design of NR unlicensed spectrum (NR-Unlicensed, NR-U), for the physical uplink shared channel (PUSCH) sent by the terminal to the network device, the network device will feedback its corresponding hybrid Automatic retransmission request response (HARQ Acknowledgement, HARQ-ACK) information. The HARQ-ACK information of the PUSCH is carried in the downlink feedback information (DFI), which is sent by the network device to the terminal. Among them, DFI can be understood as a kind of downlink control information (DCI). Among them, the HARQ-ACK information fed back by the network device to the terminal includes HARQ-ACK information corresponding to all uplink HARQ-ACK processes configured by the terminal.

In related technologies, there is no research on the timing of network equipment sending DFI to the terminal. The network equipment can send DFI to the terminal before all the uplink HARQ-ACK processes are completed, and all the uplink HARQ-ACK processes that the network equipment needs to feed back to the terminal are carried by the DFI. Corresponding HARQ-ACK information.

Summary of the invention

In order to overcome the problems in the related art, the present disclosure provides an unlicensed frequency band feedback method, an unlicensed frequency band feedback device, and a storage medium.

According to the first aspect of the embodiments of the present disclosure, an unlicensed frequency band feedback method is provided, which is applied to network equipment, and includes:

It is determined that a high-priority physical uplink shared channel is received; and downlink feedback information is sent, and the downlink feedback information is used to feed back hybrid automatic repeat request response information of the high-priority physical uplink shared channel.

In an implementation manner, the sending downlink feedback information includes: sending downlink feedback information at the first available downlink control information monitoring opportunity after the end position of the high-priority physical uplink shared channel time domain resource; The downlink control information monitoring time is a downlink control information monitoring time configured to monitor the downlink feedback information.

In another implementation manner, the interval between the start position of the time domain resource corresponding to the first available downlink control information monitoring opportunity and the end position of the time domain resource of the high-priority physical uplink shared channel is greater than or equal to the first duration.

In another implementation manner, the first duration is agreed by a protocol; or indicated by the network device through high-level signaling; or determined by negotiation between the network device and the terminal device.

In another implementation manner, the sending downlink feedback information includes: sending the downlink feedback information within a second time period after the end position of the high-priority physical uplink shared channel time domain resource.

In another implementation manner, the downlink feedback information is also used to feed back the second hybrid automatic repeat request response information corresponding to other uplink hybrid automatic repeat request response processes; the second hybrid automatic repeat request response information corresponding to the second hybrid automatic repeat request response information The priority of the physical uplink shared channel is lower than the priority of the high priority physical uplink shared channel.

In another implementation manner, the second hybrid automatic repeat request response information is a set default value.

In another implementation manner, the other uplink hybrid automatic repeat request response process is an uplink hybrid automatic repeat request response process that has not been fed back before receiving the end position of the time domain resource of the high-priority physical uplink shared channel.

According to a second aspect of the embodiments of the present disclosure, an unlicensed frequency band feedback method is provided, which is applied to a terminal, and includes:

Sending a high-priority physical uplink shared channel; receiving downlink feedback information, where the downlink feedback information is used to feed back hybrid automatic repeat request response information of the high-priority physical uplink shared channel.

In an implementation manner, the receiving downlink feedback information includes: receiving the downlink feedback information at the first available downlink control information monitoring opportunity after the end position of the high-priority physical uplink shared channel time domain resource; The downlink control information monitoring time is a downlink control information monitoring time configured to monitor the downlink feedback information.

In another implementation manner, the receiving downlink feedback information includes: receiving the downlink feedback information within a second time period after the end position of the high-priority physical uplink shared channel time domain resource.

In another implementation manner, the other uplink hybrid automatic repeat request response process is an uplink hybrid automatic repeat request response that has not been fed back before the network device receives the end position of the time domain resource of the high-priority physical uplink shared channel process.

In another implementation manner, the unlicensed frequency band feedback method further includes: responding to that the downlink feedback information is not received at the first available downlink control information monitoring opportunity or within the first time period, and the terminal is configured with a configuration authorization Physical uplink shared channel, the physical uplink shared channel is authorized to retransmit the high-priority physical uplink shared channel through the configuration.

According to a third aspect of the embodiments of the present disclosure, there is provided an unlicensed frequency band feedback device applied to network equipment, including:

The receiving unit is configured to determine that a high-priority physical uplink shared channel is received; the sending unit is configured to send downlink feedback information, the downlink feedback information is used to feed back the hybrid automatic retransmission of the high-priority physical uplink shared channel Request response information.

In an implementation manner, the sending unit sends the downlink feedback information at the first available downlink control information monitoring occasion after the end position of the high-priority physical uplink shared channel time domain resource; wherein the available downlink control information monitoring The timing is a downlink control information monitoring timing configured to monitor the downlink feedback information.

In another implementation manner, the sending unit sends the downlink feedback information within a second time period after the end position of the high-priority physical uplink shared channel time domain resource.

According to a fourth aspect of the embodiments of the present disclosure, there is provided an unlicensed frequency band feedback device applied to a terminal, including:

The sending unit is configured to send a high-priority physical uplink shared channel; the receiving unit is configured to receive downlink feedback information, where the downlink feedback information is used to feed back the hybrid automatic repeat request response of the high-priority physical uplink shared channel information.

In an implementation manner, the receiving unit receives the downlink feedback information at the first available downlink control information monitoring opportunity after the end position of the high-priority physical uplink shared channel time domain resource; wherein the available downlink control information monitoring opportunity It is a downlink control information monitoring opportunity configured to monitor the downlink feedback information.

In another implementation manner, the receiving unit receives the downlink feedback information within a second time period after the end position of the high-priority physical uplink shared channel time domain resource.

In yet another implementation manner, the sending unit is further configured to respond to not receiving the downlink feedback information at the first available downlink control information monitoring opportunity or within the first time period, and the terminal is configured with a configuration authorized physical uplink Shared channel, the physical uplink shared channel is authorized to retransmit the high-priority physical uplink shared channel through the configuration.

According to a fifth aspect of the embodiments of the present disclosure, there is provided an unlicensed frequency band feedback device, including:

Processor; a memory used to store executable instructions of the processor;

The processor is configured to execute the unlicensed frequency band feedback method described in the first aspect or any one of the implementation manners of the first aspect.

According to a sixth aspect of the embodiments of the present disclosure, there is provided an unlicensed frequency band feedback device, including:

Processor; a memory used to store executable instructions of the processor;

The processor is configured to execute the unlicensed frequency band feedback method according to the second aspect or any one of the implementation manners of the second aspect.

According to a seventh aspect of the embodiments of the present disclosure, a non-transitory computer-readable storage medium is provided. When instructions in the storage medium are executed by a processor of a network device, the network device can execute the first aspect or the first aspect. Any one of the unlicensed frequency band feedback methods described in the implementation manner.

According to an eighth aspect of the embodiments of the present disclosure, there is provided a non-transitory computer-readable storage medium. When instructions in the storage medium are executed by a processor of a mobile terminal, the mobile terminal can execute the second aspect or the second aspect. Any one of the unlicensed frequency band feedback methods described in the implementation manner.

The technical solution provided by the embodiments of the present disclosure may include the following beneficial effects: a high-priority physical uplink shared channel is received, and downlink feedback information is sent. The downlink feedback information is used to feed back the hybrid automatic repeat request response information of the high-priority physical uplink shared channel, so as to realize the feedback of the high-priority physical uplink shared channel feedback information.

It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure.

Description of the drawings

The drawings herein are incorporated into the specification and constitute a part of the specification, show embodiments consistent with the disclosure, and are used together with the specification to explain the principle of the disclosure.

Fig. 1 is a diagram showing an architecture of a communication system according to an exemplary embodiment.

Fig. 2 is a flow chart showing a method for unlicensed frequency band feedback according to an exemplary embodiment.

Fig. 3 is a flowchart showing an unlicensed frequency band feedback method according to an exemplary embodiment.

Fig. 4 is a flowchart showing an unlicensed frequency band feedback method according to an exemplary embodiment.

Fig. 5 is a block diagram showing an unlicensed frequency band feedback device according to an exemplary embodiment.

Fig. 6 is a block diagram showing an unlicensed frequency band feedback device according to an exemplary embodiment.

Fig. 7 is a block diagram showing an unlicensed frequency band feedback device according to an exemplary embodiment.

Fig. 8 is a block diagram showing an unlicensed frequency band feedback device according to an exemplary embodiment.

Detailed ways

The exemplary embodiments will be described in detail here, and examples thereof are shown in the accompanying drawings. When the following description refers to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementation manners described in the following exemplary embodiments do not represent all implementation manners consistent with the present disclosure. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

The feedback method provided by the embodiments of the present disclosure can be applied to the wireless communication system shown in FIG. 1. Referring to Figure 1, the wireless communication system includes terminals and network equipment. The terminal is connected to the network equipment through wireless resources, and transmits and receives data.

It can be understood that the wireless communication system shown in FIG. 1 is only for schematic illustration, and the wireless communication system may also include other network equipment, such as core network equipment, wireless relay equipment, and wireless backhaul equipment. Not shown in Figure 1. The embodiments of the present disclosure do not limit the number of network devices and the number of terminals included in the wireless communication system.

It can be further understood that the wireless communication system of the embodiments of the present disclosure is a network that provides wireless communication functions. The wireless communication system can use different communication technologies, such as code division multiple access (CDMA), wideband code division multiple access (WCDMA), time division multiple access (TDMA) , Frequency Division Multiple Access (FDMA), Orthogonal Frequency-Division Multiple Access (OFDMA), Single Carrier Frequency Division Multiple Access (Single Carrier FDMA, SC-FDMA), Carrier Sense Multiple access/conflict avoidance (Carrier Sense Multiple Access with Collision Avoidance). According to different network capacity, speed, delay and other factors, the network can be divided into 2G (English: generation) network, 3G network, 4G network or future evolution network, such as 5G network, 5G network can also be called a new wireless network ( New Radio, NR). For the convenience of description, the wireless communication network is sometimes referred to simply as a network in this disclosure.

Further, the network device involved in the present disclosure may also be referred to as a wireless access network device. The wireless access network equipment can be: base station, evolved base station (evolved node B, base station), home base station, access point (AP) in wireless fidelity (WIFI) system, wireless relay Node, wireless backhaul node, transmission point (transmission point, TP), or transmission and reception point (transmission and reception point, TRP), etc., can also be the gNB in the NR system, or can also be a component or part of the equipment constituting the base station Wait. When it is a vehicle-to-vehicle (V2X) communication system, the network device may also be a vehicle-mounted device. It should be understood that, in the embodiments of the present disclosure, the specific technology and specific device form adopted by the network device are not limited.

Further, the terminal involved in the present disclosure may also be referred to as terminal equipment, user equipment (UE), mobile station (Mobile Station, MS), mobile terminal (Mobile Terminal, MT), etc., which are A device that provides voice and/or data connectivity. For example, the terminal may be a handheld device with a wireless connection function, a vehicle-mounted device, and the like. At present, some examples of terminals are: smart phones (Mobile Phone), Pocket Computers (Pocket Personal Computer, PPC), handheld computers, personal digital assistants (Personal Digital Assistant, PDA), notebook computers, tablet computers, wearable devices, or Vehicle equipment, etc. In addition, when it is a vehicle-to-vehicle (V2X) communication system, the terminal device may also be a vehicle-mounted device. It should be understood that the embodiments of the present disclosure do not limit the specific technology and specific device form adopted by the terminal.

In Figure 1, the terminal communicates with the network device, and the process in which the terminal sends data to the network device can be referred to as uplink transmission. The process of network equipment sending data to the terminal can be referred to as downlink transmission. During the uplink transmission and downlink transmission of the terminal and network equipment, the HARQ feedback technology is adopted to ensure the reliability of the transmission.

In the standard discussion and design of R16NR-U, for the PUSCH channel sent by the terminal to the network device, the network device feeds back the HARQ-ACK information of the PUSCH. The PUSCH channel sent by the terminal to the network device includes the PUSCH dynamically scheduled by the network device through an uplink grant (UL grant) and the PUSCH (CG-PUSCH) granted by the terminal using a semi-static configuration. The HARQ-ACK information of the PUSCH is carried in the DFI and fed back to the terminal by the network equipment. Among them, the HARQ-ACK information carried in the DFI contains the HARQ-ACK information corresponding to all the uplink HARQ-ACK processes configured by the terminal. For example, the network equipment configures 16 uplink HARQ processes for the terminal. Before the network equipment decides to send DFI, there are 12 HARQ processes corresponding to the actual PUSCH transmission and the network equipment has completed the demodulation of the PUSCH, and there are another 4 There is no actual PUSCH transmission in the HARQ process, or actual PUSCH transmission occurs but the time before the network device sends the DFI is too short, and the network device has not been able to demodulate the PUSCH in the future, then the DFI sent by the network device must include the above 12 HARQ processes The corresponding actual HARQ-ACK feedback information, the HARQ-ACK information of the other 4 HARQ processes can be correspondingly set to the default value (for example, non-acknowledgement (NACK)) or set to correspond to the HARQ process when the PUSCH was scheduled last time HARQ-ACK information (equivalent to retransmit the HARQ-ACK information corresponding to the PUSCH scheduled on the last HARQ process).

In 5G NR, the terminal concurrently supports high reliability and low latency (Ultra Reliable Low Latency Communications, URLLC) service types and mobile bandwidth enhancement (Enhanced Mobile Broadband, eMBB) service types. The URLLC service is a service type that requires high reliability and low latency. The eMBB service does not require such high reliability and low delay, but it will require a larger data transmission rate.

For the URLLC service, it is hoped that its HARQ-ACK information can be transmitted as soon as possible, and the delay between PDSCH and HARQ-ACK feedback can be reduced, so as to reduce the overall data transmission delay. For eMBB services, the HARQ-ACK feedback does not strictly require low delay. The HARQ-ACK information of multiple PDSCHs in the time domain can be collectively transmitted together to improve resource utilization efficiency.

For the same terminal, it is a common scenario to have URLLC services and eMBB services at the same time. In order to support the flexible multiplexing of the two services, in the URLLC discussion of R16, it has been determined that the PUSCH (including the dynamically scheduled PUSCH and the semi-statically configured PUSCH) must be prioritized at the physical layer. Among them, for the semi-statically configured PUSCH, the priority is directly configured through the RRC configuration parameters. The dynamically scheduled PUSCH is indicated by the physical layer or by downlink control information (DCI) or by the physical layer signal, for example, using 1 bit in the DCI to indicate the priority of the dynamically scheduled PUSCH. Among them, the high priority PUSCH should usually be used for scheduling for URLLC uplink services.

In the upcoming R17 standard discussion, we will study how to deploy URLLC services on unlicensed frequency bands. When the URLLC service is deployed on an unlicensed frequency band, in order to support flexible multiplexing with the eMBB service, it should also support PUSCH scheduling with two different priorities, high priority and low priority. For URLLC uplink services, high-priority PUSCH can be used for transmission, and for eMBB uplink services, low-priority PUSCH can be used for transmission. For the high-priority PUSCH, the terminal should obtain HARQ-ACK information as soon as possible, so that it can retransmit quickly in the case of an error in the first transmission and reduce the data transmission delay.

In related technologies, there is no study on the timing of the network device sending DFI to the terminal, and no study on how to perform HARQ-ACK feedback on the PUSCH of the URLLC service on the unlicensed frequency band. The network equipment usually sends DFI to the terminal before all the uplink HARQ-ACK processes are finished. The DFI bears the HARQ-ACK information corresponding to all the uplink HARQ-ACK processes that the network equipment needs to feed back to the terminal, but this method does not meet the requirements of high usage. URLLC uplink service scheduled by priority PUSCH.

In view of this, the embodiments of the present disclosure provide an unlicensed frequency band feedback method. The network device determines that a high-priority PUSCH is received, and sends a DFI for feeding back the high-priority PUSCH HARQ-ACK information, so as to realize the feedback of the high-priority PUSCH Corresponding to the timely feedback of HARQ-ACK information.

Fig. 2 is a flowchart showing an unlicensed frequency band feedback method according to an exemplary embodiment. As shown in Fig. 2, the unlicensed frequency band feedback method is used in a network device and includes the following steps.

In step S11, it is determined that a high priority PUSCH is received.

In step S12, DFI for feeding back HARQ-ACK information of the high-priority PUSCH is transmitted.

In the embodiment of the present disclosure, the network device determines that the high-priority PUSCH is received, and sends the DFI to the terminal after the end position of the PUSCH time domain resource, and feeds back the HARQ-ACK information of the high-priority PUSCH in time, which is suitable for the high-priority PUSCH Scheduled URLLC uplink service.

The network device sends the DFI to the terminal after receiving the high priority PUSCH. After sending the high-priority PUSCH, the terminal can receive the DFI that characterizes the high-priority PUSCH HARQ-ACK information, and the terminal can obtain the HARQ-ACK information as soon as possible, so as to quickly retransmit in the case of an error in the first transmission and reduce data transmission Time delay.

Fig. 3 is a flowchart showing an unlicensed frequency band feedback method according to an exemplary embodiment. As shown in Fig. 3, the unlicensed frequency band feedback method is used in a terminal and includes the following steps.

In step S21, a high priority PUSCH is transmitted.

In step S22, DFI for feeding back HARQ-ACK information of the high-priority PUSCH is received.

In the embodiments of the present disclosure, the implementation process of the above-mentioned unlicensed frequency band feedback method will be described below in conjunction with practical applications.

In the embodiments of the present disclosure, the high-priority PUSCH received by the above-mentioned network device may be a high-priority PUSCH scheduled by the network device using DCI for the terminal, or it may also be a terminal that uses a high-priority CG-PUSCH resource received by the network device. PUSCH transmitted. After the network device receives the high-priority PUSCH scheduled for the terminal using DCI, or the network device receives the PUSCH transmitted by the terminal using the high-priority CG-PUSCH resource, the network device sends to the terminal after the end position of the PUSCH time domain resource DFI is used to feed back the HARQ-ACK information of the high-priority PUSCH.

In the embodiment of the present disclosure, the high-priority PUSCH corresponds to a low-latency service, where the low-latency service is a service that is more delay-sensitive compared to other high-latency services; that is, the low-latency PDSCH corresponds to The requirements of the service for delay are higher than those corresponding to the high-delay PDSCH. For example, the service corresponding to the low-latency PDSCH is the URLLC service, and the service corresponding to the high-latency PDSCH is the eMBB service. In the embodiment of the present disclosure, the priority of the low-delay PDSCH is higher than that of the high-delay PDSCH.

In an implementation manner of the embodiment of the present disclosure, the time for the network device to send the DFI to the terminal may be the first DCI monitoring occasion (DCI monitoring occasion) configured to be able to monitor the DFI after the end position of the high-priority PUSCH time domain resource. The DCI monitoring occasion is the periodic time-frequency resource location where the terminal needs to monitor the DCI, and it is also the time-frequency resource location at which the network device can send various DCIs. If the network device is configured for the DFI to only be sent on a certain part of the DCI monitoring occasion, the terminal can only monitor the DFI on these configured DCI monitoring occasions.

In the embodiment of the present disclosure, the network device is configured with the first DCI monitoring opportunity capable of monitoring the DFI after the end position of the high-priority PUSCH time domain resource to send the available DFI for feeding back the high-priority PUSCH HARQ-ACK information. The terminal receives the DFI used to feed back the high-priority PUSCH HARQ-ACK information at the first available DCI monitoring opportunity configured to be able to monitor the DFI after the end position of the high-priority PUSCH time domain resource. The available downlink control information monitoring time is a downlink control information monitoring time configured to monitor the downlink feedback information.

In the embodiment of the present disclosure, the interval between the start position of the time domain resource corresponding to the available DCI monitoring opportunity of the DFI and the end position of the time domain resource of the high-priority PUSCH is greater than or equal to the first duration T. In other words, the network device configures the first DCI monitoring opportunity that can monitor the DFI after the duration of T after the end position of the high-priority PUSCH time domain resource, as the DFI for sending back the high-priority PUSCH HARQ-ACK information The timing of the first DCI monitoring. The terminal receives the DFI used to feed back the high-priority PUSCH HARQ-ACK information at the first DCI listening opportunity configured to monitor the DFI after the duration of T after the end position of the high-priority PUSCH time domain resource.

In the embodiments of the present disclosure, the specified time T is used for the network equipment to demodulate the PUSCH, which can be agreed by agreement; or indicated by the network equipment through high-level signaling; or determined through negotiation between the network equipment and the terminal equipment; or reported to the network by the terminal equipment equipment. For example, T may be a value set according to the PUSCH subcarrier spacing. For example, when the subcarrier spacing is 30KHZ, T is 6 time domain symbols. In some embodiments, the determination by the network device and the terminal device through negotiation may be: the terminal device reports one or more optional durations, and the network device determines the first duration from the one or more optional durations, and Notify the terminal device.

In another implementation manner of the embodiment of the present disclosure, a timer with a duration of the second duration is configured for the terminal, and the timer is started at the end position of the high-priority PUSCH time domain resource. The network device starts a timer at the end position of the high-priority time domain resource, and sends the DFI for feeding back the high-priority PUSCH HARQ-ACK information within the valid period of the timer. The terminal starts a timer at the end position of the high-priority time-domain resource, and receives the DFI used to feed back the high-priority PUSCH HARQ-ACK information within the valid period of the timer. The timer valid period refers to the period from when the timer is started to when the timer has not expired.

In the embodiment of the present disclosure, the second duration of the timer started after the end position of the high-priority PUSCH time domain resource may be configured by the network device to the terminal through high-level signaling. For example, it is configured to the terminal through radio resource control (Radio Resource Control, RRC) layer signaling or media resource control (Media Access Control, MAC) layer signaling. It can also be agreed through a protocol; or determined through negotiation between the network device and the terminal device; or reported to the network device by the terminal.

Further, in the embodiments of the present disclosure, in addition to the HARQ-ACK information used to feed back the high-priority PUSCH in the DFI sent by the network device to the terminal, it can also be used to feed back HARQ-ACK information corresponding to other uplink HARQ processes. Among them, other uplink HARQ processes can be understood as HARQ processes different from the high-priority PUSCH in the uplink HARQ processes sent by the terminal to the network device. In the embodiments of the present disclosure, the HARQ-ACK information of the high-priority PUSCH and the HARQ-ACK information corresponding to other uplink HARQ processes are fed back through the DFI, which can improve the transmission efficiency of the HARQ-ACK information.

In an implementation manner of the embodiment of the present disclosure, the HARQ-ACK information in the DFI that the network device feeds back to the terminal includes the HARQ-ACK information of the high-priority PUSCH, and the HARQ-ACK information of other uplink HARQ processes can be set to default values (E.g. NACK). All other HARQ processes are set to default values, so that the terminal can make full use of the default values as known information in the process of decoding the HARQ-ACK information in the DFI, thereby increasing the probability of successful decoding.

In another implementation manner of the embodiment of the present disclosure, the DFI that the network device feeds back to the terminal may also feed back both the high-priority PUSCH and the PUSCH that has not yet been fed back before its time domain position. Other uplink HARQ processes can all be set to default values (for example, NACK). The DFI that the network device feeds back to the terminal will feed back both the high-priority PUSCH and the PUSCH that has not yet been fed back before its time domain position. It can feed back the HARQ-ACK information of the high-priority PUSCH while also feeding back other low-priority PUSCHs. HARQ-ACK information improves the efficiency of HARQ-ACK information transmission.

In the embodiment of the present disclosure, the network device feeds back the DFI representing the high priority PUSCH HARQ-ACK information to the terminal within the DCI monitoring occasion or before the second duration timer expires (within the valid period). The terminal receives the DFI representing the high-priority PUSCH HARQ-ACK information within the DCI monitoring occasion or within the valid period of the timer. In an implementation manner, the terminal does not receive the DFI representing the high-priority PUSCH HARQ-ACK information in the DCI monitoring occasion, or does not receive the DFI representing the high-priority PUSCH HARQ-ACK information within the valid period of the timer, then The terminal determines that the transmission of the high-priority PUSCH is unsuccessful, and retransmits the high-priority PUSCH.

In the embodiment of the present disclosure, in the case where the configured grant PUSCH (Configured Grant PUSCH-CG-PUSCH) is configured, the terminal will autonomously retransmit the high-priority PUSCH through the CG-PUSCH. For the case where the CG-PUSCH is not configured, the terminal waits for the retransmission scheduling instruction from the network device, and retransmits the high-priority PUSCH after receiving the retransmission scheduling instruction sent by the network device.

Fig. 4 is a flowchart showing an unlicensed frequency band feedback method according to an exemplary embodiment. As shown in Fig. 4, the unlicensed frequency band feedback method is used in a terminal and includes the following steps.

In step S31, the high priority PUSCH is transmitted.

In step S32, DFI for feeding back HARQ-ACK information of the high-priority PUSCH is received.

In step S33, in response to the DFI is not received within the DCI monitoring occasion or within the valid period of the timer, and the terminal is configured to configure the CG-PUSCH, the high-priority PUSCH is retransmitted through the CG-PUSCH.

In the unlicensed frequency band feedback method provided by the embodiments of the present disclosure, the network device sends the DFI to the terminal after receiving the high-priority PUSCH. After sending the high-priority PUSCH, the terminal can receive the DFI that characterizes the high-priority PUSCH HARQ-ACK information, and the terminal can obtain the HARQ-ACK information as soon as possible, so as to quickly retransmit in the case of an error in the first transmission and reduce data transmission Time delay. Using the unlicensed frequency band feedback method provided in the embodiments of the present disclosure, HARQ-ACK feedback is performed on the PUSCH of the URLLC service. This method can make full use of the existing DFI feedback mode in the original NR-U protocol to provide low-latency HARQ-ACK feedback for eMBB and URLLC services.

In the embodiments of the present disclosure, the high-priority PUSCH corresponds to a low-latency service, where the low-latency service is a service that is more delay-sensitive compared to other high-latency services; that is, the service corresponding to the low-latency PDSCH The requirement for time delay is higher than that of the service corresponding to the high-delay PDSCH. For example, the service corresponding to the low-latency PDSCH is the URLLC service, and the service corresponding to the high-latency PDSCH is the eMBB service. In the embodiment of the present disclosure, the priority of the low-delay PDSCH is higher than that of the high-delay PDSCH.

It is understandable that the unlicensed frequency band feedback method provided in the embodiments of the present disclosure can be applied in the process of interaction between the terminal and the network device. For the process of the terminal and the network device interacting to implement the feedback information feedback method of the unlicensed frequency band, reference may be made to the related description of the foregoing embodiment, and details are not described herein again.

Based on the same concept, the embodiment of the present disclosure also provides an unlicensed frequency band feedback device.

It is understandable that the unlicensed frequency band feedback device provided in the embodiments of the present disclosure includes hardware structures and/or software modules corresponding to various functions in order to realize the above-mentioned functions. In combination with the units and algorithm steps of the examples disclosed in the embodiments of the present disclosure, the embodiments of the present disclosure can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed by hardware or computer software-driven hardware depends on the specific application and design constraint conditions of the technical solution. Those skilled in the art can use different methods for each specific application to implement the described functions, but such implementation should not be considered as going beyond the scope of the technical solutions of the embodiments of the present disclosure.

Fig. 5 is a block diagram showing an unlicensed frequency band feedback device according to an exemplary embodiment. 5, the unlicensed frequency band feedback device 100 is applied to a network device, and includes a receiving unit 101 and a sending unit 102.

The receiving unit 101 is configured to determine that a high-priority physical uplink shared channel is received. The sending unit 102 is configured to send downlink feedback information, which is used to feed back hybrid automatic repeat request response information of the high-priority physical uplink shared channel.

In an implementation manner, the sending unit 102 sends the downlink feedback information at the first available downlink control information monitoring opportunity after the end position of the high-priority physical uplink shared channel time domain resource. The available downlink control information monitoring time is a downlink control information monitoring time configured to monitor the downlink feedback information.

In yet another implementation manner, the first duration is agreed upon by agreement. Or it is indicated by the network equipment through high-level signaling. Or it is determined through negotiation between the network device and the terminal device. Or the terminal device reports to the network device.

In another implementation manner, the sending unit 102 sends the downlink feedback information within a second time period after the end position of the high-priority physical uplink shared channel time domain resource.

In another embodiment, the downlink feedback information is also used to feed back the second hybrid automatic repeat request response information corresponding to other uplink hybrid automatic repeat request response processes. The priority of the physical uplink shared channel corresponding to the second hybrid automatic repeat request response message is lower than the priority of the high priority physical uplink shared channel.

In another embodiment, the other uplink hybrid automatic repeat request response process is an uplink hybrid automatic repeat request response process that has not been fed back before receiving the end position of the time domain resource of the high priority physical uplink shared channel.

Fig. 6 is a block diagram showing an unlicensed frequency band feedback device according to an exemplary embodiment. 6, the unlicensed frequency band feedback device 200 is applied to a terminal, and includes a sending unit 201 and a receiving unit 202.

The sending unit 201 is configured to send a high-priority physical uplink shared channel. The receiving unit 202 is configured to receive downlink feedback information, which is used to feed back hybrid automatic repeat request response information of the high-priority physical uplink shared channel.

In an implementation manner, the receiving unit 202 receives the downlink feedback information at the first available downlink control information monitoring opportunity after the end position of the high-priority physical uplink shared channel time domain resource. The available downlink control information monitoring time is a downlink control information monitoring time configured to monitor the downlink feedback information.

In another implementation manner, the receiving unit 202 receives the downlink feedback information within a second time period after the end position of the high-priority physical uplink shared channel time domain resource.

In another embodiment, the other uplink hybrid automatic repeat request response process is an uplink hybrid automatic repeat request response process that is not fed back before the network device receives the end position of the time domain resource of the high priority physical uplink shared channel.

In another implementation manner, the sending unit 201 is further configured to: respond to the downlink feedback information not being received at the first available downlink control information monitoring opportunity or within the first time period, and the terminal is configured with the configuration authorized physical uplink shared channel, by configuring Authorize the physical uplink shared channel to retransmit the high-priority physical uplink shared channel.

Regarding the device in the foregoing embodiment, the specific manner in which each module performs operations has been described in detail in the embodiment of the method, and detailed description will not be given here.

Fig. 7 is a block diagram showing a device 300 for transmitting NR-U feedback information according to an exemplary embodiment. For example, the device 300 may be a mobile phone, a computer, a digital broadcasting terminal, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, etc.

7, the device 300 may include one or more of the following components: a processing component 302, a memory 304, a power component 306, a multimedia component 308, an audio component 310, an input/output (I/O) interface 312, a sensor component 314, And the communication component 316.

The processing component 302 generally controls the overall operations of the device 300, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing component 302 may include one or more processors 320 to execute instructions to complete all or part of the steps of the above-mentioned method. In addition, the processing component 302 may include one or more modules to facilitate the interaction between the processing component 302 and other components. For example, the processing component 302 may include a multimedia module to facilitate the interaction between the multimedia component 308 and the processing component 302.

The memory 304 is configured to store various types of data to support the operation of the device 300. Examples of these data include instructions for any application or method operating on the device 300, contact data, phone book data, messages, pictures, videos, etc. The memory 304 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable and Programmable Read Only Memory (EPROM), Programmable Read Only Memory (PROM), Read Only Memory (ROM), Magnetic Memory, Flash Memory, Magnetic Disk or Optical Disk.

The power component 306 provides power to various components of the device 300. The power component 306 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for the device 300.

The multimedia component 308 includes a screen that provides an output interface between the device 300 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touch, sliding, and gestures on the touch panel. The touch sensor may not only sense the boundary of a touch or slide action, but also detect the duration and pressure related to the touch or slide operation. In some embodiments, the multimedia component 308 includes a front camera and/or a rear camera. When the device 300 is in an operation mode, such as a shooting mode or a video mode, the front camera and/or the rear camera can receive external multimedia data. Each front camera and rear camera can be a fixed optical lens system or have focal length and optical zoom capabilities.

The audio component 310 is configured to output and/or input audio signals. For example, the audio component 310 includes a microphone (MIC), and when the device 300 is in an operation mode, such as a call mode, a recording mode, and a voice recognition mode, the microphone is configured to receive an external audio signal. The received audio signal can be further stored in the memory 304 or sent via the communication component 316. In some embodiments, the audio component 310 further includes a speaker for outputting audio signals.

The I/O interface 312 provides an interface between the processing component 302 and a peripheral interface module. The above-mentioned peripheral interface module may be a keyboard, a click wheel, a button, and the like. These buttons may include, but are not limited to: home button, volume button, start button, and lock button.

The sensor component 314 includes one or more sensors for providing the device 300 with various aspects of status assessment. For example, the sensor component 314 can detect the on/off status of the device 300 and the relative positioning of components. For example, the component is the display and the keypad of the device 300. The sensor component 314 can also detect the position change of the device 300 or a component of the device 300. , The presence or absence of contact between the user and the device 300, the orientation or acceleration/deceleration of the device 300, and the temperature change of the device 300. The sensor assembly 314 may include a proximity sensor configured to detect the presence of nearby objects when there is no physical contact. The sensor component 314 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor component 314 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

The communication component 316 is configured to facilitate wired or wireless communication between the apparatus 300 and other devices. The device 300 can access a wireless network based on a communication standard, such as WiFi, 2G, or 3G, or a combination thereof. In an exemplary embodiment, the communication component 316 receives a broadcast signal or broadcast related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 316 further includes a near field communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology and other technologies.

In an exemplary embodiment, the apparatus 300 may be implemented by one or more application specific integrated circuits (ASIC), digital signal processors (DSP), digital signal processing equipment (DSPD), programmable logic devices (PLD), field programmable A gate array (FPGA), controller, microcontroller, microprocessor, or other electronic components are implemented to implement the above methods.

In an exemplary embodiment, there is also provided a non-transitory computer-readable storage medium including instructions, such as the memory 304 including instructions, which may be executed by the processor 320 of the device 300 to complete the foregoing method. For example, the non-transitory computer-readable storage medium may be ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, optical data storage device, etc.

Fig. 8 is a block diagram showing a device 400 for transmitting NR-U feedback information according to an exemplary embodiment. For example, the apparatus 400 may be provided as a network device, such as a base station or the like. 8, the device 400 includes a processing component 422, which further includes one or more processors, and a memory resource represented by the memory 432, for storing instructions that can be executed by the processing component 422, such as an application program. The application program stored in the memory 432 may include one or more modules each corresponding to a set of instructions. In addition, the processing component 422 is configured to execute instructions to perform the above-mentioned method.

The device 400 may also include a power supply component 426 configured to perform power management of the device 400, a wired or wireless network interface 450 configured to connect the device 400 to a network, and an input output (I/O) interface 458. The device 400 can operate based on an operating system stored in the memory 432, such as Windows ServerTM, Mac OS XTM, UnixTM, LinuxTM, FreeBSDTM or the like.

In an exemplary embodiment, there is also provided a non-transitory computer-readable storage medium including instructions, such as the memory 432 including instructions, which may be executed by the processing component 422 of the device 400 to complete the foregoing method. For example, the non-transitory computer-readable storage medium may be ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, optical data storage device, and the like.

It can be further understood that in the present disclosure, "plurality" refers to two or more than two, and other quantifiers are similar. "And/or" describes the association relationship of the associated objects, indicating that there can be three types of relationships, for example, A and/or B, which can mean: A alone exists, A and B exist at the same time, and B exists alone. The character "/" generally indicates that the associated objects before and after are in an "or" relationship. The singular forms "a", "said" and "the" are also intended to include plural forms, unless the context clearly indicates other meanings.

It can be further understood that the terms "first", "second", etc. are used to describe various information, but the information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other, and do not indicate a specific order or degree of importance. In fact, expressions such as "first" and "second" can be used interchangeably. For example, without departing from the scope of the present disclosure, the first information may also be referred to as second information, and similarly, the second information may also be referred to as first information.

It is further understandable that although the operations in the embodiments of the present disclosure are described in a specific order in the drawings, they should not be understood as requiring these operations to be performed in the specific order shown or in a serial order, or requiring Perform all the operations shown to get the desired result. In certain circumstances, multitasking and parallel processing may be advantageous.

Those skilled in the art will easily think of other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses, or adaptive changes of the present disclosure. These variations, uses, or adaptive changes follow the general principles of the present disclosure and include common knowledge or conventional technical means in the technical field that are not disclosed in the present disclosure. . The description and the embodiments are to be regarded as exemplary only, and the true scope and spirit of the present disclosure are pointed out by the following claims.

It should be understood that the present disclosure is not limited to the precise structure that has been described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present disclosure is only limited by the appended claims.

Claims

An unlicensed frequency band feedback method, characterized in that it is applied to network equipment, and includes:

Determine to receive the high priority physical uplink shared channel;

Sending downlink feedback information, where the downlink feedback information is used to feed back hybrid automatic repeat request response information of the high-priority physical uplink shared channel.
The unlicensed frequency band feedback method according to claim 1, wherein the sending downlink feedback information comprises:

Send downlink feedback information at the first available downlink control information monitoring opportunity after the end position of the high-priority physical uplink shared channel time domain resource; wherein the available downlink control information monitoring opportunity is configured to monitor the downlink The timing of the downstream control information monitoring of the feedback information.
The unlicensed frequency band feedback method according to claim 2, wherein the start position of the time domain resource corresponding to the first available downlink control information monitoring opportunity and the end of the time domain resource of the high-priority physical uplink shared channel The interval between positions is greater than or equal to the first duration.
The unlicensed frequency band feedback method according to claim 3, wherein the first duration is agreed through a protocol; or indicated by a network device through high-level signaling; or determined through negotiation between the network device and the terminal.
The unlicensed frequency band feedback method according to claim 1, wherein the sending downlink feedback information comprises:

Send the downlink feedback information within a second time period after the end position of the high-priority physical uplink shared channel time domain resource.
The unlicensed frequency band feedback method according to claim 1, wherein the downlink feedback information is also used to feed back second hybrid automatic repeat request response information corresponding to other uplink hybrid automatic repeat request response processes;

The priority of the physical uplink shared channel corresponding to the second hybrid automatic repeat request response information is lower than the priority of the high priority physical uplink shared channel.
The unlicensed frequency band feedback method according to claim 6, wherein the second hybrid automatic repeat request response information is a set default value.
The unlicensed frequency band feedback method according to claim 6, wherein the other uplink hybrid automatic repeat request response process is that no feedback is performed before receiving the end position of the time domain resource of the high-priority physical uplink shared channel The uplink hybrid automatic retransmission request response process.
An unlicensed frequency band feedback method, characterized in that it is applied to a terminal, and includes:

Send high priority physical uplink shared channel;

Receiving downlink feedback information, where the downlink feedback information is used to feed back hybrid automatic repeat request response information of the high-priority physical uplink shared channel.
The unlicensed frequency band feedback method according to claim 9, wherein the receiving downlink feedback information comprises:

Receive downlink feedback information at the first available downlink control information monitoring opportunity after the end position of the high-priority physical uplink shared channel time domain resource; wherein the available downlink control information monitoring opportunity is configured to monitor the downlink The timing of the downstream control information monitoring of the feedback information.
The unlicensed frequency band feedback method according to claim 10, wherein the start position of the time domain resource corresponding to the first available downlink control information monitoring opportunity and the end of the time domain resource of the high-priority physical uplink shared channel The interval between positions is greater than or equal to the first duration.
The unlicensed frequency band feedback method according to claim 11, wherein the first duration is agreed through a protocol; or indicated by a network device through high-level signaling; or determined through negotiation between the network device and the terminal device.
The unlicensed frequency band feedback method according to claim 9, wherein the receiving downlink feedback information comprises:

Receive downlink feedback information within a second time period after the end position of the high-priority physical uplink shared channel time domain resource.
The unlicensed frequency band feedback method according to claim 9, wherein the downlink feedback information is also used to feed back second hybrid automatic repeat request response information corresponding to other uplink hybrid automatic repeat request response processes;

The priority of the physical uplink shared channel corresponding to the second hybrid automatic repeat request response information is lower than the priority of the high priority physical uplink shared channel.
The unlicensed frequency band feedback method according to claim 14, wherein the second hybrid automatic repeat request response information is a set default value.
The unlicensed frequency band feedback method according to claim 14, wherein the other uplink hybrid automatic repeat request response process is that the network device receives the end position of the time domain resource of the high-priority physical uplink shared channel. The upstream hybrid automatic retransmission request response process of feedback is performed.
The unlicensed frequency band feedback method according to claim 10 or 13, wherein the method further comprises:

In response to not receiving the downlink feedback information at the first available downlink control information monitoring opportunity or within the first time period, and the terminal is configured with a configured authorized physical uplink shared channel, the physical uplink shared channel is retransmitted through the configuration authorized physical uplink shared channel. The high-priority physical uplink shared channel.
An unlicensed frequency band feedback device, characterized in that it is applied to network equipment, and includes:

The receiving unit is configured to determine that a high-priority physical uplink shared channel is received;

The sending unit is configured to send downlink feedback information, where the downlink feedback information is used to feed back hybrid automatic repeat request response information of the high-priority physical uplink shared channel.
An unlicensed frequency band feedback device, which is characterized in that it is applied to a terminal and includes:

The sending unit is configured to send a high-priority physical uplink shared channel;

The receiving unit is configured to receive downlink feedback information, where the downlink feedback information is used to feed back hybrid automatic repeat request response information of the high-priority physical uplink shared channel.
An unlicensed frequency band feedback device, characterized in that it comprises:

processor;

A memory for storing processor executable instructions;

Wherein, the processor is configured to execute the unlicensed frequency band feedback method according to any one of claims 1 to 8.
An unlicensed frequency band feedback device, characterized in that it comprises:

processor;

A memory for storing processor executable instructions;

Wherein, the processor is configured to execute the unlicensed frequency band feedback method according to any one of claims 9 to 17.
A non-transitory computer-readable storage medium, when the instructions in the storage medium are executed by the processor of the network device, the network device can execute the unlicensed frequency band feedback method according to any one of claims 1 to 8 .
A non-transitory computer-readable storage medium, when the instructions in the storage medium are executed by the processor of the mobile terminal, so that the mobile terminal can execute the unlicensed frequency band feedback method according to any one of claims 9 to 17 .